Air circulator



Dec. 12, 1944. W BANDURsKl I v 2,364,935

AIR CIRCULATOR Filed April 25, 1942 Patented Dec. 12, 1944 UNITED STATES PATENT OFFICE AIR CIRCULATOR Walter Bandurski, Chicago, Ill. 4 Application April 25, 1942, Serial No. 440,563

2 Claims.

This invention relates to improvements in air circulators designed principally for use in dwellings although capable of use elsewhere. One object is to provide an air circulator adapted to circulate warm or cool air about a room or apartment to uniformly heat or ventilate the same.

A further object is to provide an air circulator that is automatic in operation. A further object is to providev an air circulator of few parts that is inexpensive to manufacture, durable in use and that can be readily installed even by persons lacking skill in the arti A still further object is to yprovide an air circulator adapted for use in connection with a stove', furnace, or other heating unit and that is operated solely by the exhaust when the unit is in operation thus providing means for effective dissemination of Warm air about the apartment served by the unit. i

A still further object is to provide an air circulator for installation in an apartment communicating with the atmosphere outside the apartment to automatically ventilate the apartment.

With the foregoing and other objects in View the invention consists in the combination and arrangement of parts to be hereinafter fully described, pointed out in the claims and illustrated in the accompanying drawing which forms a part of this patent and in which- Fig. 1 is a side view, partly in section andpartly broken away, illustrating the application of the air circulator.

Fig. 2 is a View similar to Fig. 1 but omitting the cold air intake and illustrating a slightly modified form'of impelling fan structure.

Fig, 3 is a fragmentary view of Fig. 2 illustrating a further modified form of impelling fan structure. i

Figs. 4 and 5 are face views of two types of fans employed, and,

Fig. 6 is an enlarged fragmentary sectional or somewhat inwardly therefrom, is provided with View of a shaft.

Like reference characters denote corresponding parts throughout the several views.

The reference numeral I denotes a heating unit provided with the conventional pipe 2 leading to the stack 3 and including the elbow 4. Referring now to Fig. 1 the elbow 4 is provided interiorly with a bracket 5 and exteriorly with a bracket 6 in which bearings 1, 8 respectively are carried, said brackets operatively supporting a rotary transmission shaft 9 that passes through one wall of said elbow, said shaft having fast thereupon within said elbow the impelling fan I0 and adjustably thereupon outside said elbow the air disseminating fan Il, preferably larger than the fan Ill, said fan Il being adjustabley toward and away from the elbow.

When the heating unit I is in operation the smoke and gases therefrom pass through the pipe a screen I5, the inner end of said pipe terminating in spaced relation to one face of the fanv Il so that the air discharged from said pipe will strike against and rotate the fan which will distribute the air about the structure or apartment. The discharge end of the pipe I3 may be closed by a suitable cap (not shown) or otherwise, when not in use.

Referring now to Fig. 2 the pipe 2 carries a shaft 9a extending through its straight portion below the elbow, said shaft being similar to the shaft 9 but having fast thereupon a swash-motion impelling fan I0a. This fan being in a straight portion of the pipe will be contacted with greater froce by the smoke and gases passing therethrough than if located in the elbow with the result that a greater speedwill be imparted to the circulator.

In Fig. 3 a fan 9b having curved blades is provided, this type of fan having a greater surface presented to the ow of gases through the pipe.

The novel features and the operations of this device will be apparent from the foregoing description. While the device has been shown and the structure described in detail it is obvious that this is not to be considered limited to the exact form disclosed and that changes may be made therein within the scope of what is claimed without departing from the spirit of the invention.

What is claimed is:

1 The combination with a room heater having an inner heating unit, an outer open-top casing, and a smoke pipe leading to a stack; of a rotary transmission shaft in said smoke pipe extending through one wall thereof, a fan fast upon said shaft within said smoke pipe, and a fan .upon said shaft outside said smoke pipe positioned to blow air across the top of the heater.

2. The combination with a room heater having an inner heating unit, an outer open-top casing, a smoke pipe leading to a stack, and an elbow in said smoke pipe disposed at a slightly higher level than and in close proximity to said casing; of a rotary transmission shaft in said elbow extending through the wall thereof in the direction of said casing, a fan fast upon said shaft within said elbow, and a fan fast upon said shaft outside said elbow between the same and said casing to blow air across the top of said casing.

WALTER BANDURSKI. 

